Can I put top coat on the following day or 2 days later?
You can apply the topcoat the following day. First, lightly sand the lamination and wipe it down with acetone before applying the topcoat. After 48 hours, apply a thin layer of resin and let it cure until it's touch-dry (about 40 minutes to an hour) before adding the topcoat. This helps prevent flaking due to poor adhesion.